Targeting drug delivery nanoparticles to sites of inflammation

将药物输送纳米颗粒靶向炎症部位

• 批准号: 7538931
• 负责人: HENRY Jerrold KAPLAN
• 金额: $ 28.77万
• 依托单位: POTENTIA PHARMACEUTICALS, INC
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7538931
• 关键词: Acute; Address; Affect; Age; Age related macular degeneration; Age-Years; Aging; Area; Binding; Biocompatible; Biodistribution; Blindness; Blood Vessels; Bypass; Chronic; Complement; Complement Activation; Complement Inactivators; Complex; Conjunctival Hemorrhage; Cultured Cells; Cyclic Amino Acids; Cyclic Peptides; Data; Degenerative Disorder; Development; Diagnosis; Disease; Disorder by Site; Drug Delivery Systems; Drug Formulations; Drug Kinetics; Encapsulated; Endophthalmitis; Endothelial Cells; Environmental Risk Factor; Exudative age-related macular degeneration; Eye; Eye diseases; Frequencies; Genetic; Goals; Home environment; Homing; In Vitro; Individual; Inflammation; Inflammatory; Injection of therapeutic agent; Invasive; Lead; Legal Blindness; Life; Ligands; Link; Lymphocyte; Nonexudative age-related macular degeneration; Oryctolagus cuniculus; Pain; Pathogenesis; Patients; Peptides; Pharmaceutical Preparations; Pharmacologic Substance; Phase; Play; Process; Public Health; Purpose; Research; Risk; Role; Selectins; Site; Small Business Technology Transfer Research; Staging; System; Therapeutic Agents; Time; Toxic effect; Toxicology; Vision; Week; Work; base; concept; day; density; glycolate; in vivo; intravenous injection; nanoparticle; particle; poly (lactic-co-glycolic acid); programs; prototype; sialyl Lewis x; trafficking; vitreous floater

DESCRIPTION (provided by applicant): The purpose of this Phase II STTR project is to develop a nanoparticle-based drug delivery system for use in the treatment of dry age-related macular degeneration (AMD). AMD is the leading cause of blindness for individuals over fifty-five years of age that live in the industrialized world, affecting approximately 10 million people in the US and as many as 30 million worldwide. There are two forms of the disease, both of which cause a loss of central vision. Approximately fifteen percent have wet, or exudative, AMD, which causes rapid, disabling blindness. The remaining eighty-five percent of patients have dry AMD, a less severe form that produces gradual vision loss. At present, there are no approved pharmacological agents approved for the treatment of dry AMD. This project seeks study to develop a "smart" poly-lactic, glycolic acid (PLGA) nanoparticle drug delivery system that can home to sites of inflammation after intravenous injection. Homing is achieved through a mechanism similar to one used by lymphocytes recognize regions of inflammation. Once there, the particles will release a complement inhibitor over a sustained period time. A growing body of research links excessive complement activation with several diseases of aging, including AMD. The prototype nanoparticle developed in Phase I is able to selectively bind activated endothelial cells in cell culture. In vivo studies further show that the nanoparticles are able to bind inflamed blood vessels in the eye. In vitro studies showed that they are also able to release a complement inhibitor for periods in excess of 60 days. PUBLIC HEALTH RELEVANCE This application is critically concerned with developing a drug product that can be used to treat nonexudative age-related macular degeneration. There are currently no approved treatments for this disorder, making it a major the issue of public health. In the longer term, the goal of this work is to develop drug products that can selectively target and treat sites of disease action, particularly those associated inflammation and degenerative disease.

描述(由申请人提供)：这项第二阶段STTR项目的目的是开发一种基于纳米颗粒的药物输送系统，用于治疗干性老年性黄斑变性(AMD)。AMD是生活在工业化世界的55岁以上人群的主要致盲原因，影响到美国约1000万人，全球多达3000万人。这种疾病有两种形式，都会导致中心视力丧失。大约15%的人患有湿性或渗出性AMD，这会导致快速失明。剩下的85%的患者患有干性AMD，这是一种不那么严重的形式，会导致渐进性视力丧失。目前，还没有批准的药理药物用于治疗干性AMD。该项目旨在研究开发一种“智能”的聚乳酸、乙醇酸(PLGA)纳米粒给药系统，该系统可以在静脉注射后定位炎症部位。归巢是通过一种类似于淋巴细胞识别炎症区域的机制来实现的。一旦到达那里，这些颗粒将在一段持续的时间内释放补体抑制剂。越来越多的研究将过度的补体激活与包括AMD在内的几种衰老疾病联系起来。在第一阶段开发的原型纳米颗粒能够选择性地结合细胞培养中激活的内皮细胞。体内研究进一步表明，纳米颗粒能够结合眼睛中发炎的血管。体外研究表明，它们还能够在超过60天的时间内释放补体抑制剂。公共卫生相关性这项申请与开发一种可用于治疗非渗出性老年性黄斑变性的药物产品密切相关。目前还没有得到批准的治疗这种疾病的方法，这使它成为一个重大的公共卫生问题。从长远来看，这项工作的目标是开发能够选择性地针对和治疗疾病作用部位的药物产品，特别是那些与炎症和退行性疾病相关的疾病。